What is an umbilical hernia? An umbilical hernia is a bulge through the abdominal muscles in the area of the navel (belly button). The hernia may contain tissue from the abdomen, part of an organ (such as the intestine), or fluid.
Iliac crest contusion occurs due to bleeding of abdominal muscles and swelling. This can cause excruciating pain when the person tries to move his hip region. Bleeding can occur on the periosteum region of the bone resulting in inflammation and the muscles of the iliac crest would develop spasms.
Avulsion fractures of the anterior superior iliac spine are rare. This injury is usually seen in adolescents, as an avulsion fracture of the apophyses, a result of sudden vigorous contraction or repetitive contraction of the sartorius and tensor fasciae latae muscles.